M272 Balance Shaft Sprocket / Camshaft Adjuster Wear
high- Typically appears
- 80–130k mi
- Estimated repair
- $1,800 – $4,500
2007 Mercedes-Benz
E-ClassSedan
Sedan
The 2007 Mercedes-Benz E350 is the fifth-generation (W211) E-Class sedan powered by a 3.5L V6. It sits at the heart of Mercedes' lineup — larger and more comfortable than the C-Class, more attainable than the S-Class. By 2007 Mercedes had addressed many of the early W211 rust and electrical gremlins from 2003–2005, making the later model years more livable, but this is still a German luxury car that demands proper maintenance and carries higher-than-average repair costs when things go wrong. The 3.5L M272 V6 is a capable, smooth engine that pulls well from low RPM and is comfortable at highway speeds. The 7G-Tronic 7-speed automatic is refined but can be sensitive to fluid condition. Fuel economy is respectable for a rear-wheel-drive luxury sedan of this era — expect real-world numbers closer to the city figure if you spend time in stop-and-go traffic. For a buyer in the Lake Geneva area, the biggest concerns are Wisconsin salt exposure on the underbody and suspension components, electronics reliability as the car ages, and the cost of Mercedes-specific parts. This is a rewarding vehicle to own when maintained correctly, but deferred maintenance snowballs quickly on W211-generation cars.
Reliability
3/5
Verified data
Specs shown for E350 — the most common configuration.
Other trims may vary in engine, drivetrain, or fuel economy. Sign in to see your vehicle's exact specs.
Engine
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Drivetrain
RWD
Fuel
Premium gasoline
MPG
17 city / 24 hwy / 19 combined
Seats
—
Doors
—
Body
Midsize Cars
Overview
AI-curatedThe 2007 Mercedes-Benz E350 is the fifth-generation (W211) E-Class sedan powered by a 3.5L V6. It sits at the heart of Mercedes' lineup — larger and more comfortable than the C-Class, more attainable than the S-Class. By 2007 Mercedes had addressed many of the early W211 rust and electrical gremlins from 2003–2005, making the later model years more livable, but this is still a German luxury car that demands proper maintenance and carries higher-than-average repair costs when things go wrong. The 3.5L M272 V6 is a capable, smooth engine that pulls well from low RPM and is comfortable at highway speeds. The 7G-Tronic 7-speed automatic is refined but can be sensitive to fluid condition. Fuel economy is respectable for a rear-wheel-drive luxury sedan of this era — expect real-world numbers closer to the city figure if you spend time in stop-and-go traffic. For a buyer in the Lake Geneva area, the biggest concerns are Wisconsin salt exposure on the underbody and suspension components, electronics reliability as the car ages, and the cost of Mercedes-specific parts. This is a rewarding vehicle to own when maintained correctly, but deferred maintenance snowballs quickly on W211-generation cars.
Known for
- Smooth, refined 3.5L M272 V6 with strong mid-range power
- Excellent highway ride quality and long-distance comfort
- Well-appointed interior with solid build quality for the era
- 7G-Tronic automatic — one of the first 7-speed automatics in this segment
- Rear-wheel drive handling balance
Best for
- Highway commuters and road-trippers who prioritize comfort
- Buyers who want European luxury at a used-car price
- Drivers willing to invest in proper, scheduled maintenance
- Those who prefer a larger sedan without going full S-Class
Watch for
- M272 engine balance shaft and camshaft adjuster wear — a well-documented issue on this generation
- Air suspension (Airmatic) failure if equipped — expensive to repair
- Rust on rear wheel arches and subframe on salt-exposed cars
- Electrical gremlins from aging wiring harnesses and SAM modules
- High cost of genuine or OEM-equivalent parts compared to domestic vehicles
Common issues by mileage
6 knownIntake/Exhaust Camshaft Solenoid (VVT Actuator) Failure
medium- Typically appears
- 70–120k mi
- Estimated repair
- $400 – $1,100
Oxygen Sensor Heater Circuit Failure
medium- Typically appears
- 80–150k mi
- Estimated repair
- $250 – $600
Airmatic Air Suspension Compressor or Strut Failure (if equipped)
high- Typically appears
- 80–150k mi
- Estimated repair
- $800 – $2,800
SAM (Signal Acquisition Module) / Electrical Gremlins
medium- Typically appears
- 100k+ mi
- Estimated repair
- $500 – $1,800
Rear Subframe and Wheel Arch Rust (salt-belt cars)
medium- Typically appears
- Any mileage on unprotected cars
- Estimated repair
- $600 – $3,000
Maintenance schedule
- 1 Every 7,500–10,000 mi or annually — do NOT stretch to the dashboard service reminder on a used car Engine oil change with MB-approved 5W-40 full synthetic
The M272 balance shaft sprocket wear is worsened by oil degradation. Fresh oil at shorter intervals is cheap insurance against a $3,000+ engine job.
- 2 Every 40,000 mi (Mercedes calls it 'lifetime' fluid — ignore that on a used car) 7G-Tronic transmission fluid service
Degraded ATF causes erratic shifting and can accelerate valve body wear. Independent shops regularly see transmission issues on cars that never had the fluid changed.
- 3 Every 60,000 mi Spark plugs (NGK or equivalent OEM spec)
The M272 requires reaching plugs through the intake valley on some cylinders. Labor is significant, so confirm plugs are fresh before purchase or budget for the service.
- 4 Every 3–4 years Coolant flush with MB-approved coolant
Degraded coolant accelerates corrosion inside aluminum engine components. Use only MB-spec coolant — mixing types can cause problems in this engine.
- 5 Every 2 years or when locks become slow/erratic Inspect and lubricate door lock vacuum lines and actuators
W211 door locks use a vacuum system that cracks and fails with age. Catching a cracked line early prevents a locked-out situation in a Wisconsin winter.
- 6 Every 2 years regardless of mileage Brake fluid flush
Mercedes specifies this interval for good reason — hygroscopic brake fluid absorbs moisture and can cause ABS/ESP module issues on top of reduced braking performance.
- 7 Every fall before road salt season Inspect underbody, subframe, and rear wheel arch liners for rust
W211 rear subframes and wheel arches are a known rust point on Midwest cars. Catching surface rust early and treating it is far cheaper than structural repair.
- 8 Every 20,000 mi or annually Air filter and cabin filter replacement
The cabin filter on this generation is easy to access and directly affects HVAC blower performance and interior air quality — often neglected on used luxury cars.
Always defer to the manufacturer's service manual for warranty-mandated intervals.
Cost of ownership
Annual maintenance
$1,200 – $2,800
Fuel
Premium (91 octane) required. At 19 mpg combined and ~15,000 mi/year, expect $2,400–$2,900/year at current Upper Midwest premium prices.
Insurance
Moderate-to-high for a used luxury sedan. Typically $1,200–$1,800/year for full coverage in Wisconsin depending on driver profile.
The 2007 E350 has a low purchase price relative to its original MSRP, but running costs are solidly European-luxury territory. Parts cost 30–60% more than comparable domestic or Japanese sedans. Routine maintenance done proactively runs $1,200–$1,800/year. If you're behind on services (common on used examples), budget $2,000–$4,000 in the first year to bring it fully current. A major job like balance shaft repair or air suspension overhaul can easily add $2,000–$4,500 in a single visit.
Seasonal care
Lake Geneva, WI Winter
- Switch to a 5W-40 or 0W-40 full synthetic approved for MB 229.5 spec — cold cranking matters at sub-zero Wisconsin temps and the M272 needs oil circulating fast at startup.
- Test the battery each fall — this car's electronics are sensitive to low voltage, and a weak battery can trigger SAM module faults and erratic behavior before it fails to start.
- Fill the washer reservoir with -20°F or colder rated fluid; the reservoir is large and standard fluid will freeze solid overnight in a Lake Geneva winter.
- Inspect the vacuum door lock lines before temperatures drop — cracked lines become completely non-functional in the cold and can leave you locked out.
- If equipped with Airmatic air suspension, know that cold temperatures stress the compressor; have the system inspected if the car has been sitting or if you notice uneven ride height.
- Apply an underbody rust inhibitor or anti-corrosion spray to the rear subframe and wheel arch areas before first snow — road salt accelerates the known W211 rust points.
Summer
- Check tire pressure monthly — heat causes pressure to rise, and the OEM recommended pressures (typically 35–38 PSI) are for cold tires. Check in the morning before driving.
- Inspect the A/C refrigerant charge and cabin filter — a clogged filter drastically reduces airflow on hot days and the compressor works harder to compensate.
- Watch for coolant temperature creep in stop-and-go traffic; the W211 thermostat and coolant temp sensor can fail and cause subtle overheating that damages the head gasket before the gauge reads high.
- Check that the sunroof drain tubes are clear if equipped — blocked drains overflow into the SAM module area and cause expensive electrical damage.
Comparable vehicles
2007 BMW
5 Series
The E60 528i/530i is the closest rival — same segment, same RWD luxury-sport mission, similar used pricing. BMW's inline-6 is arguably more reliable in this era than the M272, but electrical complexity is comparable.
2007 Lexus
GS 350
RWD luxury sedan with a similarly sized V6, but significantly better long-term reliability. Lower repair costs and easier to find well-maintained examples. Less prestige than Mercedes but far less drama.
2007 Audi
A6
Direct competitor in the European luxury sedan segment. Available AWD is a plus for Wisconsin winters, but Audi's maintenance costs are similarly high and the 3.2L FSI engine has its own carbon buildup issues.
2007 Volvo
S80
More affordable to maintain than the E-Class, available AWD, and strong safety record. Less prestigious but genuinely capable winter car at a lower total ownership cost.